97247761 has 4 divisors (see below), whose sum is σ = 104728372. Its totient is φ = 89767152.

The previous prime is 97247723. The next prime is 97247767. The reversal of 97247761 is 16774279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16774279 = 3911 ⋅4289.

It can be written as a sum of positive squares in 2 ways, for example, as 16966161 + 80281600 = 4119^2 + 8960^2 .

It is a cyclic number.

It is not a de Polignac number, because 97247761 - 2¹¹ = 97245713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97247767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3740286 + ... + 3740311.

It is an arithmetic number, because the mean of its divisors is an integer number (26182093).

Almost surely, 2^97247761 is an apocalyptic number.

It is an amenable number.

97247761 is a deficient number, since it is larger than the sum of its proper divisors (7480611).

97247761 is a wasteful number, since it uses less digits than its factorization.

97247761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7480610.

The product of its digits is 148176, while the sum is 43.

The square root of 97247761 is about 9861.4279391983. The cubic root of 97247761 is about 459.8609551394.

The spelling of 97247761 in words is "ninety-seven million, two hundred forty-seven thousand, seven hundred sixty-one".